Re: mesa-users] Massive stars not reaching TPAGB

[Bill P. <pa...@ki...>]

Hi Max,

On Jul 20, 2010, at 10:52 AM, Max Katz wrote:

> I ran a 7 Msun model starting yesterday, with mesh_delta_coeff set to something like 0.2, and a wind scheme roughly the same as Bill's, and it got through about 53000 timesteps and to a mass of about 1.3 Msun by itself, before it ran into convergence issues.

Thanks for the info.  Next question is what was the star doing at the time the convergence problems started?
Was there a supersonic ejection (check v_surf/csound_surf).   Was there a region at the base of the convection zone
with Pgas << Prad?  Does this look like a legitimate physical event or does it look like something that the code is creating?

As you know, not all convergence problems are the result of bugs in the code -- some are "bugs" in nature!!!

--Bill